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Hi guys,<br><br>i'm still testing the eap-sim authentication and lately i got acceptable results using <br>a simple flat file containing the triplets of specific SIM cards. Next step will be to <br>enable the external radius server to use the sysmoBTS database hlr.sqlite3, so the <br>OpenBSC users (Users using the OpenBSC-GSM Network) can automatically access<br>to the internet.<br><br>i just want to ask if there are any limitations with the sysmocom SIM cards?<br> In fact, i noticed that by using the sysmocom sim cards, the eap-sim authentication<br>failed when the RAND values strong randomly chosen were, e.g<br> 046DBA898016454aB3920C58180DA2F5 or e177842fe16c47de84784be1b4141c27. <br>But when i chose a RAND like this 10101010101010101010101010101010,<br>0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F or 00000000000000000000000000000000,<br>the authentication succeeded.<br><br>By using an other sim (not from sysmocom) with the same strong and weak RAND<br>values the authentication always succeeded.<br><br>Why does the authentication succeed buy using sysmocom sim card with weak RAND<br>(10101010101010101010101010101010) and fail by using strong RAND values<br>(e177842fe16c47de84784be1b4141c27) ?<br><br>best regards<br><br>Yann<br> </div></body>
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